how to generate an age variable that is not static

[Mariam Al Sabah]

hello,

Please may you help me with this. How do you generate a date variable that is non static. I am trying to calculate firm age and my sample is from 2012-2016 hence the age has to be changing every year. How do I do this? Thank you.

[Jorrit Gosens]

Data in Stata is just data. There are no formulas like there are in e.g., Excel, that are recalculated when opening a file.
Only way to do this is by running a do file that recalculates with difference between current date and your firm creation dates.

[Phil Bromiley]

You'll increase your chances of a precise answer by following the FAQ on asking questions - provide Stata code in code delimiters, readable Stata output, and sample data using dataex.

With more information, Jorrit or I might have shown you precisely how to code it.